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3 years ago

9l9-8xl=2x+3 check for extraneous solutions

Mathematics

2 answers:

iris [78.8K]3 years ago

6 0

9-(9-8x)=2x+3

simplify -72x+81=2x+3

subtract 2x from both sides -74x+81=3

subtract 81 from both sides -74x=-78

divide by -74 on both sides x=39/37

Kay [80]3 years ago

5 0

What level is this?
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Answer:

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Step-by-step explanation:

Let

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Substituting the value of D

$(\frac{360}{T})T -3( \frac{360}{T}) + 4T -12 = 360$

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$(\frac{360}{T})T -3( \frac{360}{T}) + 4T= 372$

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$( \frac{1080}{T}) + 4T= 372 - 360$

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Solving the quadratic equation we get

T = 18 and T = -15

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